Hoogle Search

Within LTS Haskell 24.4 (ghc-9.10.2)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. mapRWS :: ((a, s, w) -> (b, s, w')) -> RWS r w s a -> RWS r w' s b

   monads-tf	Control.Monad.RWS.Strict

   Map the return value, final state and output of a computation using the given function.

   • runRWS (mapRWS f m) r s = f (runRWS m r
     s)

2. mapRWST :: (m (a, s, w) -> n (b, s, w')) -> RWST r w s m a -> RWST r w' s n b

   monads-tf	Control.Monad.RWS.Strict

   Map the inner computation using the given function.

   • runRWST (mapRWST f m) r s = f (runRWST m
     r s)

3. mapReader :: (a -> b) -> Reader r a -> Reader r b

   monads-tf	Control.Monad.Reader

   Transform the value returned by a Reader.

   • runReader (mapReader f m) = f .
     runReader m

4. mapReaderT :: (m a -> n b) -> ReaderT r m a -> ReaderT r n b

   monads-tf	Control.Monad.Reader

   Transform the computation inside a ReaderT.

   • runReaderT (mapReaderT f m) = f .
     runReaderT m

5. mapState :: ((a, s) -> (b, s)) -> State s a -> State s b

   monads-tf	Control.Monad.State.Lazy

   Map both the return value and final state of a computation using the given function.

   • runState (mapState f m) = f . runState
     m

6. mapStateT :: (m (a, s) -> n (b, s)) -> StateT s m a -> StateT s n b

   monads-tf	Control.Monad.State.Lazy

   Map both the return value and final state of a computation using the given function.

   • runStateT (mapStateT f m) = f .
     runStateT m

7. mapState :: ((a, s) -> (b, s)) -> State s a -> State s b

   monads-tf	Control.Monad.State.Strict

   Map both the return value and final state of a computation using the given function.

   • runState (mapState f m) = f . runState
     m

8. mapStateT :: (m (a, s) -> n (b, s)) -> StateT s m a -> StateT s n b

   monads-tf	Control.Monad.State.Strict

   Map both the return value and final state of a computation using the given function.

   • runStateT (mapStateT f m) = f .
     runStateT m

9. mapWriter :: ((a, w) -> (b, w')) -> Writer w a -> Writer w' b

   monads-tf	Control.Monad.Writer.Lazy

   Map both the return value and output of a computation using the given function.

   • runWriter (mapWriter f m) = f (runWriter
     m)

10. mapWriterT :: (m (a, w) -> n (b, w')) -> WriterT w m a -> WriterT w' n b

    monads-tf	Control.Monad.Writer.Lazy

    Map both the return value and output of a computation using the given function.

    • runWriterT (mapWriterT f m) = f
      (runWriterT m)

Page 223 of many | Previous | Next